Home / 76,724.32-115,047.24-35,135.68

Finding the Fourth Proportional to 76,724.32, 115,047.24 and 35,135.68

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Solution

The fourth proportional to 76,724.32, 115,047.24 and 35,135.68 is: 52,685.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,724.32 : 115,047.24 = 35,135.68 : x
  2. Step 2: Convert to fraction form
    76,724.32/115,047.24 = 35,135.68/x
  3. Step 3: Cross multiply
    76,724.32x = 115,047.24 × 35,135.68
  4. Step 4: Simplify right side
    76,724.32x = 4,042,263,009.52
  5. Step 5: Solve for x
    x = 4,042,263,009.52/76,724.32
  6. Step 6: Final answer
    x = 52,685.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.